Operating room lamp



Nov. 21, 1961 H. GUNTHER ETAL ,0

OPERATING ROOM LAMP Filed April 1a, 1958 2 Sheets-Sheet 1 HERMANNGUNTHER RUDOLF STAEGER ATTORNEYS 1951 H. GUNTHER ETAL 3,010,013

OPERATING ROOM LAMP Filed April 18, 1958 2 Sheets-Sheet 2 INVENTORS HEPMANN GUN THER RUDOLF .STAEGER ATTORNEYS Patented Nov. 21, 1961 ice3,010,013 OPERATING RGUM LAMP Hermann Giinther, Hanan, and RudolfStaeger, Frankfurt, Germany, assignors to Quarzlampen-Gcsellschaftm.b.H., Hanau (Main), Germany Filed Apr. 18, 1958, Ser. No. 729,354Claims priority, application Germany Apr. 18, 1957 4 Claims. (Cl.2401.4)

The present invention relates to an operating room lamp. More inparticular, the present invention relates to an operating room lampconstruction of the type in which the lamp casing is attached to theceiling fixture by means of a rotary arm.

It is known in the art to provide operating room lamps with a hinged armpermitting the lamp to be moved into various positions. These lampconstructions suifer from the disadvantage that the lamp cannot be movedinto the desired position by performing a straight, rectilinear motion.If the lamp has to be brought into a position by performing a motionwhich would lead through the center of the rotary ceiling fixtureattaching the lamp to the ceiling of the operating room, the lamp mustbe displaced laterally in order to avoid this dead center.

It is also known in the art to provide a lamp casing having a flat boxshaped configuration and to position the casing rotatably between thetwo arms of a supporting frame with the axis of the rotary movementbeing positioned parallel to the flat lower surface of the lamp casing.It is also known to position the shaft of this support frame rotatablyabout an axis which is horizontally disposed and vertical relative tothe shaft of the sup porting frame.

This construction requires a comparatively long distance to be coveredby a compensating spring compensating the weight of the lamp.

It is an object of the present invention to provide an operating roomlamp construction, which makes it possible to move the lamp from anyposition to any other position above the area where the operation isbeing performed, by one straight, rectilinear motion of the lamp casing.

It is another object of the present invention to provide an operatingroom lamp construction, which requires a comparatively small tiltingangle when lifting the lamp casing and in which a compensating springhas to cover only a comparatively small distance.

It is a further object of the present invention to provide an operatingroom lamp construction, which can easily be equipped with a photographicor television camera without impairing the easy manoeuvrability and thelighting effect of the lamp.

It is yet another object of the present invention to provide anoperating room lamp construction, in which the individual spot lightsare so disposed in the lamp casing that a photographic or televisioncamera can be easily disposed on the side of the lamp casing providedwith the individual spot light.

These objects are achieved by the operating room lamp construction ofthe present invention, comprising a pair of horizontal, slightly tiltedarticulated arms disposed between the lamp casing and the rotary ceilingfixture, and three hinges connecting the two articulated arms with eachother, and with the ceiling fixture and the lamp casing, respectively.

According to a further feature of the present invention,

the hinge connecting the two articulated arms with each other isprovided with stop members preventing the two arms from forming an anglegreater than The range of operation of the lamp casing is alsodetermined by the two articulated arms and it can be extended by makingthe arms sulficiently long. Usually, the range of displacement will beabout 2.5 times the length of the articulated arms, if they areprevented from forming an angle exceeding 120".

According to another embodiment of the present invention, the hinge inwhich there is horizontally and rotatably positioned the two-armedsupport frame is mounted upon an extended arm in such a manner that thedistance of this hinge from the center of the lamp casing is at least1.2 times the distance of the nearest hinge with a vertical axis ofrotation from the center of the lamp casing.

Furthermore, according to the invention, the individual spot lights aredisposed on the lower surface of the lamp casing in a circle with anadditional spot light in the center of this circle, which additionalspot light can be removed and replaced by a photographic or televisioncamera, without impairing substantially the excellent lighting effect ofthe camera.

The invention will be more fully understood upon the followingdescription of the accompanying drawings, wherein FIGURE 1 is a sideelevational view of the operating room lamp construction of theinvention;

FIGURE 2 is a top view of the operating room lamp construction of theinvention shown in a central position and two further positions;

FIGURE 3 is a plan view from below showing somewhat schematically thelamp casing with the circularly disposed individual spot lights and anadditional indi vidual spot light in the center; I

FIGURE 4 is a perspective view of the lamp casing in the operating roomlamp of the present invention showing the circularly disposed individualspot lights and wherein :the central spot light has been replaced by atelevision camera; a

FIG. 5 shows stop members provided in the hinge between the twouppermost arms of the operating room lamp as shown in FIG. 1. v p

The lamp is attached to the ceiling 1 by means of a ceiling fixturecomprising a rotary hinge 2 having an axis A--A. A first articulated armcan be swivelled about this axis A-A and bears at its lower end a secondhinge 4 also having a vertical axis BB. A second articulated arm 5 isconnected to the second hinge 4 and bears at its lower end a third hinge6, having a vertical axis CC.

As illustrated in the drawing, the first arm is arranged Within thespace bounded on the top by the ceiling and below by a horizontal planewhich is spaced from the ceilingwhereas the second arm is arranged belowthis plane so that the first and second arms may pivot relative to eachother without interfering with each other.

The hinge 4 intermediate the two articulated arms 3 and 5 can beprovided with stop members 19 and 20 (FIG. 5) limiting the swivellingrange of the two arms preventing them from being displaced relative toeach other beyond a range determined by an angle which is substantiallyinferior to 180 and preferably less than The lamp casing 7 has a flatbox shaped configuration and is provided at its lower surface 6 with aplurality of circularly disposed individual spot lights 14. Anadditional spot light 15 is positioned in the center of the lowersurface of the lamp casing. The lamp casing 7 is positioned between thearms 8 and 8a of a supporting frame and can be tilted about a horizontalaxis EE.

An extension 8b of the shaft of the supporting frame having the two arms8 and 8a is rotatably positioned in a sleeve 9 and can be moved by meansof a handle 14 The movement about axis E-E passing through the ends ofthe arms 8 and 8a and the movement about the axis DD cooperate toachieve any desired tilted position of the lamp casing 7.

The height of the lamp casing can be adjusted by means of a horizontallydisposed hinge 11, by operating the handle 10 and a further handle 12.

An extension arm 13 is disposed between the hinges 6 nd 11. Thisextension arm 13 is to remove the hinge 11 from the axis CC in thedirection away from the lamp casing 7, so that a comparatively smallangle of rotation of the axis of the supporting frame with the arms 8and 8a is required for lifting the lamp casing. The extension arm canbe, for example, so constructed that the distance of hinge 11 from thecenter of lamp casing 7 is 1.3 times the distance of the closestvertical rotary hinge (i.e. hinge 6) from the center of lamp casing 7. Acompensating spring 18 is provided in the extension arm 13. This springacts upon a prolongation of the sleeve 9 and compensates the torque ofthe lamp casing 7.

The extension arm can, of course, also be employed with advantage inlamp constructions having only one articulated arm.

The individual spot lights are preferably disposed in the lamp casing inthe manner illustrated in FIGURE 3. There are provided a plurality ofindividual spot lights, for example six spot lights arranged in acircle, and an additional spot light 16 in the center. As shown in FIG-URE 4, this central spot light 16 can be replaced by a camera, e.g. atelevision camera 17, without substantially impairing the excellentlighting effect of the lamp.

The frame with the two articulated arms 3 and operates in the mannerillustrated in FIGURE 2. The bold lines indicate the central position Iof the lamp casing in which the two articulated arms form an angle of60. In position II, the two arms 3 and 5 form an angle of approximately120 and the lamp casing now assumes one of its two end positions. Inposition III, the two arms 3 and 5 form a small angle. lamp casing canbe moved further beyond position III until the articulated arm 5 issituated to the left of arm 3. In position I of the example illustratedin FIGURE 2 the center of the lamp casing is positioned exactly belowthe rotary hinge 2, with the axis AA passing exactly both through thecenter of the rotary hinge Z and through the center of the lamp casing7. The positions 11 and III are symmetrically disposed to thecenter ofthe rotary hinge Z. By positioning the rotary hinge Z at a predeterminedlocation relative to the operating table the range of movement of thelamp can be so chosen that the lamp can be moved to any location abovethe operating table. If the rotary hinge 2 is located above the lowerportion of the operating table the lamp can be sufficiently removed awayfrom the operating table so that excellent lighting conditions areobtained for gynecologic operations. I

As the operating handles are disposed close to the hinge 11 the lamp canbe moved by an operating person without reaching into the sterilizedregion where the operation is being performed. According to theinvention, the lamp can assume any position by a parallel displacementof the lamp casing short of a lateral displacement of the lamp casingand the operator does not have to leave his place of operation. Thisadvantage can be fur- Of course, the

ther enhanced by transmission means consisting of ropes or Oardan jointsdisposed in the hollow arms 8- and 8a moving the lamp casing 7 about thehorizontal axis A-A passing through the ends of the arms 8 and 8a. Themovement can be effected by axially turning the handle 10.

It will be understood that this invention is susceptible to modificationin order to adapt it to different usages and conditions, and,accordingly, it is desired to comprehend such modifications within thisinvention as may fall within the scope of the appended claims.

What is claimed is:

1. A ceiling-suspended rectilinearly adjustable lighting arrangement,comprising, in combination: a first arm having opposite ends one ofwhich is attached to the ceiling for pivotal movement relative theretoabout a first vertical pivot axis, said first am being arranged withinthe space bounded on the top by the ceiling and below by a horizontalplane which is spaced from the ceiling; a second arm having oppositeends one of which is attached to the other end of said first arm forpivotal movement relative thereto about a second vertical pivot axis,said second arm being arranged below said plane so that said first andsecond arms may pivot relative to each other without interfering witheach other; and lighting means attached to the other end of said secondanm for rectilinear pivotal movement relative thereto about a thirdvertical pivot axis, said lighting means including: a downwardlyinclined, weight-equalizing extension arm having opposite ends one ofwhich is attached to said other end of said second arm for pivotalmovement relative thereto about said third vertical axis thusconstituting the attachment between said second arm and said fightingmeans, a carrier having opposite ends one of which is attached to theother end of said extension arm for pivotal movement relative theretoabout a horizontal pivot axis, said carrier extending back toward saidthird vcntical pivot axis, and a lighting device carried by said carrierat the other of its ends, the distance between the center of saidlighting device and said horizontal pivot axis being greater than thedistance between said center and said third vertical pivot axis.

2. A ceiling-suspended rectilinearly adjustable operating room lamparrangement, comprising, in combination: a first arm having oppositeends one of which is attached to the ceiling for pivotal movementrelative thereto about a first vertical pivot axis, said first arm beingarranged within the space bounded on the top by the ceiling and below bya horizontal plane which is spaced from the ceiling; a second arm havingopposite ends one of which is attached to the other end of said firstarm for pivotal movement relative thereto about a second vertical pivotaxis, said second arm being arranged below said plane and at least oneof said arms being downwardly inclined so that said arms may pivotrelative to each other without interfering with each other; abutmentmeans for preventing said first and second arms from forming with eachother an angle greater than thereby avoiding dead center position;lighting means attached to the other end of said second armfor pivotalmovement relative thereto about a third vertical pivot axis, saidlighting means including: a downwardly inclined extension arm havingopposite ends one of which is attached to said other end of said secondarm for pivotal movement relative thereto about said third vertical axisthus constituting the attachment between said second arm and saidlighting means, a carrier having opposite ends one of which is attachedto the'other end of said extension arm for pivotal movement relativethereto about a horizontal pivot axis, said carrier extending backtoward said third vertical axis, whereby said lighting means may bemoved rectilinearly from any point within its range to any other pointwithin its range, and a lighting device carried by said carrier at theother of its ends.

3. A lamp arrangement as defined in claim 2 wherein the distance betweenthe center of said lighting device and said horizontal pivot axis is 1.3times the distance between said center and said third vertical pivotaxis.

4. A lamp arrangement as defined in claim 2 further comprising acounterbalance spring provided intermediate said extension arm and saidcarrier whereby the torque caused by the weight of said lighting deviceis compensated.

References Cited in the tile of this patent UNITED STATES PATENTS 6Carwardine Apr. 6, 1937 Dickerson July 4, 1939 Alexander Sept. 19, 1939Irmischer May 20, 1941 Benard May 27, 1941 I Greppin Apr. 21, 1942Greppin Aug. 7, 1956 Gunther et a1 Mar. 18, 1958 Strom Nov. 3, 1959FOREIGN PATENTS Austria Oct. 10, 1950

